This question reveals that Alt+` switches windows within a program just like Alt+Tab switches between open programs. Wow neat, thought I, I've always wondered why Alt+Tab didn't do this the way Windows does.

Problem:
On my non-US keyboard layout, the grave accent is not above the Tab key. It's a dead key next to Backspace. For one thing the placement of ` makes it really cumbersome to type; and second, it doesn't work because it's a dead key.